In the outpatient clinic will encounter many such cases, the patient in the tenth day or so after the transfer will appear vaginal coffee-colored discharge, will tell the patient must not be nervous, this is a normal phenomenon. In the early stage of embryo implantation, as the embryo grows, the gestational sac grows, and the uterine cavity grows in order to adapt to the embryo, there will be small blood vessel rupture and bleeding in the process, first of all, relax, first observe, if there is no increase in the vaginal discharge, just a small amount of coffee-colored secretion, it does not matter, this is a normal phenomenon. If the amount of blood increases and there is bright red blood coming out, go to the fertility center of the hospital where you have been transplanted in time.